We think our land is safe from tsunamis, but it is possible that one could hit Britain. We assess the risk

The water arrived as “mighty hills, tumbling one over another”. The churning,
foaming, deluge “so dazzled the eyes of the spectators that they imagined it
some fog or mist, as if mountains were all on fire. It came with such
swiftness, that the fowls of the air could scarcely fly so fast”. In
Monmouth, a milkmaid was saved from drowning only when “two lustie strong
men” made a boat from a water trough and rescued her. By the time the flood
had retreated back into the Bristol Channel, more than 2,000 were dead.